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Finding the Fourth Proportional to 371,817.99, 513,109.35 and 210,683.97

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Solution

The fourth proportional to 371,817.99, 513,109.35 and 210,683.97 is: 290,744.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,817.99 : 513,109.35 = 210,683.97 : x
  2. Step 2: Convert to fraction form
    371,817.99/513,109.35 = 210,683.97/x
  3. Step 3: Cross multiply
    371,817.99x = 513,109.35 × 210,683.97
  4. Step 4: Simplify right side
    371,817.99x = 108,103,914,902.12
  5. Step 5: Solve for x
    x = 108,103,914,902.12/371,817.99
  6. Step 6: Final answer
    x = 290,744.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.